Copying machine system

ABSTRACT

An electrostatic copying machine system including a copying machine and a plurality of attachments therefor to enable the machine to make copies of different types of originals. The attachments include a letter copying bridge for making copies of sheet documents, a book platen for making copies of a page of a book or some other bulky article, and a microfilm scanner for making copies of a microfilm original. At the top of the basic machine there are a plurality of rollers. Each of the attachments is driven by at least one of the machine rollers, so that the original to be copied can be scanned in synchronism with the machine operation. The electrical circuit of the basic machine includes a plurality of terminals extended to respective pins in a connector at the top of the machine. Each of the attachments includes a mating electrical connector which changes the overall circuit of the machine. In this manner, each attachment causes the machine operation to be changed to meet the specific needs of the particular type of original to be copied.

United States Patent Van Auken et al. [4 1 July 18, 1972 41 COPYINGMACHINE SYSTEM Primary Examiner-Samuel s. Matthews [72] Inventors: JohnA. Van Auken, Miami Beach; Assam": Exanuner RussenE' Mahlon GeneKaufman, Miami; Fritz Blank, Miramar, all of Fla.

Assignee: Saxon Industries, Inc., New York, NY.

Filed: April 22, 1970 Appl. No.: 30,923

11.8. C1 ..355/ll, 355/13, 355/14, 355/16, 355/25, 355/51, 355/60,355/75 Int. Cl. ..G03b 27/62 Field ofSearch ......355/3,5,6,8, 11,13,41,355/45, 49, 50, 60; 83/205 References Cited UNITED STATES PATENTSOkishima Sahley Towers et al.

I: ..3ss/3 Goodman et a1 ..83/205 X Attorney-Amster & Rothstein [57]ABSTRACT for making copies of a microfilm original. At the top of thebasic machine there are a plurality of rollers. Each of the attachmentsis driven by at least one of the machine rollers, so that the originalto be copied can be scanned in synchronism with the machine operation.The electrical circuit of the basic machine includes a plurality ofterminals extended to respective pins in a connector at the top of themachine. Each of the attachments includes a mating electrical connectorwhich changes the overall circuit of the machine. In this manner, eachattachment causes the machine operation to be changed to meet thespecific needs of the particular type of original to be copied.

67 Claims, 34 Drawing Figures Patented July 18, 1972 17 Sheets-Sheet 1INVENTORQ lo/l V4 (/KE M GE: KIUFMAN BY FRITZ BLANK k ATTORNEYS PatentedJuly 18, 1972 3,677,635

17 Sheets-Sheet 2 FIG. 2.

Patented July 18, 1972 17 Shuts-Shu t 5 Patented July 18, 1972 FIG. 4.

SIV-E 17 Sheets-Sheet 4 FIG. 7.

Patented July 18, 1972 3,677,635

17 Sheets-Sheet 6 w gg in Patented July 18, 1972 3,677,635

17 Sheets-Shut '7 IL K118 Patented July 18, 1972 l? Sheets-Sheet 9Patented July 18, 1972 17 Sheets-Sheet 1O Om QE Patented July 18, 19723,677,635

1'7 Shuts-Shoat 11 sw-p L1 #4 g FIG. 21.

Patented July 18, 1972 17 Sheets-Sheet 12 Patented July 18, 1972 l?Sheets-Shoot 15 Patented July 18, 1972 Q 3,677,635

17 Sheets-Sheet 15 O 433 494 301- .h i W 'l" FIG. 29.

Patented July 18, 1972 3,677,635 I 17 SheetsSheet 16 gijiiilir mglrnn-nuIII] COPYING MACHINE SYSTEM This invention relates to copying machines,and more particularly to a copying machine system in which a pluralityof attachments can be placed on a single copying machine to enable thecopying machine to operate in different modes.

There are many difierent types of copying machines on the market at thepresent time. Each of these machines generally is capable of operatingin only a single mode. For example, there are machines which are capableof making copies only of sheet documents (letters, etc.). Such machinescannot make copies of a page of a book, for example, because typicallythe document to be copied must be moved through the machine and theoriginal transport system cannot accept a book or other bulky articlefor transport. Other machines are capable of copying a page of a book. Abook can'be placed on top of a stationary scanning window with the pageto be copied being scanned by a moving optical system, or the book canbe placed on top of a glass platen which is moved past a stationaryoptical system. Book copiers are also capable of copying sheet documents(a sheet document can be thought of as a very thin book). A third typeof machine is one which makes paper copies of microfilm originals. Asurvey of the machines presently on the market reveals that each machineis generally capable of operating in only a single mode for example, asa letter copier, as a book copier, or as a microfilm copier.

Most businesses, if they require a copying machine at all, generallyhave a need to make copies of sheet documents. Letter copiers areusually smaller and faster than copying machines of other types. Anexample of a small, fast letter copier is disclosed in Van Auken et al.application Ser. No. 725,390, filed on Apr. 30, 1968 now US. Pat. No.3,575,503. In the Van Auken et al. machine, letters can be fed insuccession, one immediately after the other, into the nip of inputrollers, the successive original documents being collected in anoriginal tray and the copies being collected in a copy tray. While aletter copier is the most commonly required type of copying machine, onoccasions there is a need to make a copy of a page of a book. Thus,those businesses requiring bookcopying capabilities generally purchase abook copier (which can make copies of letters as well). In order toacquire the relatively infrequently used book copying capability, anumber of inconveniences must be put up with. First, the book copiergenerally requires more space. It is also much slower even when copyingletters because it takes longer to remove a first letter from the platenafter it is copied before another is put in place than it does to simplyfeed letters in succession into the nip of input rollers.

Finally, where it is necessary to copy microfilm originals, it has beenthe practice to purchase an additional machine for this purpose atsignificantly increased total cost and at the expense of space.

It is a general object of our invention to provide a copying machinesystem which includes a copying machine and various attachmentstherefor, the copying machine being designed to cooperate differentlywith each attachment in order to operate in a different mode.

The illustrative embodiment of our invention includes a copying machinesimilar to that disclosed in the Van Auken et al. application. At thetop of the machine there is provided a' plurality of rollers which canbe rotated in either direction by an original drive chain in themachine. The machine includes an electrical circuit for controllingenergization of the exposure lamps, the operation of a knife to cut copysheets from a roll of copy paper, switching of the direction of movementof the rollers at the top of the machine, etc. The electrical circuit isnot complete; various points in the circuit terminate at pins in anelectrical connector placed on top of the machine.

The letter copying attachment consists of a bridge which is placed ontop of the machine. The bridge includes another set of mating rollerswhich are driven by the rollers in the copying machine. Together, thepairs of rollers transport an original document between the top of themachine and the bottom of the bridge. The document is shuttled back andforth (as in the Van Auken et al. machine) when it is necessary to makemultiple copies of the same original. The bridge includes a connectorwhich mates with the machine connector. The bridge connector serves tocomplete the electrical circuit of the copying machine in order that themachine operate in the letter copying mode. The bridge also includes aplurality of photocells which are energized by exciter lamps at the topof the copying machine. The photocells determine the position of theoriginal document underneath the bridge. The photocells are included inthe bridge electrical circuit coupled to the machine circuit, and thephotocell outputs control the machine to cut a roll of copy paper at theappropriate times, to reverse the direction of rotation of the machinerollers, etc. With the letter bridge on top of the machine, thereresults an overall configuration whose operation is similar to that ofthe Van Auken et al. machine, and which offers all of the advantages ofa letter copier, including fast operation and compact size.

The second attachment, the book copier attachment, includes a glassplaten which is placed on top of the machine. The glass platen is movedback and forth by the machine rollers, a book on top of the platen thusbeing moved back and forth past the scanning window on top of themachine. The book copier attachment includes a cam which can be set tocorrespond to the length of the original page to be copied. A series ofrnicroswitches are provided on top of the copying machine, and as theglass platen is moved back and forth by the machine rollers, the camoperates the microswitches to synchronize the machine operation to theposition of the platen. The book copier attachment includes anelectrical connector which mates with the machine connector to therebychange the electrical circuit of the machine so that it operates in thebook copying mode. For example, unlike the letter copying mode, there isno need to utilize the photocell amplifiers in the machine whenoperating in the book copying mode. There are also some additionalsignificant differences in the machine operation in the book copyingmode which will become apparent below.

There is also a mechanical change made in the basic machine when thebook copier attachment is placed on it. The glass platen has a certainthickness which would otherwise increase the optical path of lightreflected from the original to be copied and transmitted to the exposurestation where it strikes the copy sheet. If the optical path of thebasic machine is designed to properly focus light reflected from anoriginal document (on top of the machine) on the copy sheet, theincreased optical path length as a result of the thickness of the glassplaten would result in imperfect focusing of the light reflected from abook (or original document) placed on the glass platen. For this reason,when the book copier attachment is placed on the machine, it causes alever to move, which lever in turn repositions a mirror inside thecopying machine. The repositioned mirror serves to shorten the opticalpath inside the machine. The total length of the optical path resultingfrom the increase caused by the glass platen and the decrease caused bythe repositioned mirror provides perfect focusing.

The book copier attachment includes a pair of rails which extend outwardfrom the machine; the rails are required to support and guide the glassplaten as it is moved back and forth by the machine rollers. The railsnecessarily increase the size of the overall machine. However, the railsand the glass platen can be attached to or removed from the copyingmachine in less than a minute. (Similar remarks apply to the lettercopier bridge.) This means that in ordinary operation, the letter copierbridge can be left on the machine, thereby resulting in the most compactarrangement possible as well as maximum speed in the successive feedingin of original documents to be copied. Only when it is required to makea copy of a bulky article, such as a book, does the letter copier bridgehave to be removed and the book copier attachment placed in its stead ontop of the machine. After the necessary copies are made, the lettercopier bridge can be placed back on the machine. This arrangement allowsthe advantages of both types of prior art machines to be obtained,without requiring two different machines for the purpose.

The third attachment, the microfilm scanner" or microfilm reader" issimilarly placed on top of the copying machine. The unit includes amechanism for holding a microfilm original, a projector lamp, a screenfor viewing an enlargement of the microfilm original, and in generalthose features generally found in a microfilm reader. The microfilmreader also includes a mirror which can be moved between two positionsin accordance with the operation of a solenoid. In a first position, themirror directs the microfilm image to the screen. In this manner, amicrofiche card, for example, can be positioned until the desired frameis selected. In the second position, the mirror allows the light to beprojected through the microfilm to the scanning window of the copyingmachine. This light is used to expose the copy paper.

It is necessary to move the microfilm image as the copy sheet is movedthrough the machine so that they are in optical synchronization witheach other. (Movement of the microfilm in this manner corresponds tomovement of a letter through the letter copying bridge or movement ofthe book copier glass platen.) The microfilm scanner includes a rollerwhich engages one of the machine rollers and is driven thereby. Themachine roller controls movement of the microfilm to be copied. But acompletely different sequence of roller movements is required for themicrofilm reader. (For example, the microfilm must first be transportedin the reverse direction after selection of the frame to be copiedinasmuch as when a frame is selected, it is centered with respect to thescanning window rather than being in front of it.) This will becomeapparent below. The microfilm reader includes a cam which is driven bythe machine roller, as well as a group of microswitches operated by thecam. As the cam rotates, the microswitch operations indicate theposition of the microfilm frame to be copied. The microswitches areextended to an electrical connector on the microfilm reader whichengages the electrical connector on the machine. The resulting overallelectrical circuit is different from the letter copier and book copiercircuits and enables the overall machine to function in a third mode.The microfilm reader further includes additional mechanisms, such as asolenoid for moving the mirror to control either imaging of themicrofilm frame on the screen or the transmission of the light projectedthrough it to the machine scanning window. The solenoid is similarlycoupled to the electrical circuit of the copying machine through theelectrical connectors, and is thus operated at the appropriate times tocontrol scanning.

On those occasions when it is necessary to make a paper copy of amicrofilm original, all that is required is to remove the letter copierbridge from the machine and to replace it by the microfilm reader. Themicrofilm reader (as also the letter and book copiers) can be operatedin a multiple copy mode so that multiple copies of a selected microfilmframe can be made. After the microfilm reader is thus used, it can bereplaced by the letter copier bridge which prepares the machine for itsusual mode of operation. Instead of requiring a separate machine for thepurpose of making copies of a microfilm original, all that is requiredis a relatively simple microfilm reader attachment for the basicmachine. I

It is a feature of our invention to provide a copying machine having anelectrical circuit temiinating at a number of points in an electricalconnector, the machine operating in difierent modes depending onparticular attachments placed thereon, each attachment including amating electrical connector for completing the overall electricalcircuit of the machine in a different manner. (Although the illustrativeembodiment of the invention is described with reference to only threeattachments, other attachments, such as an original feeder, can be usedwith the copying machine, as will be apparent to those skilled in theart.)

It is another feature of our invention to provide a drive mechanism atan exposed surface of the copying machine for engaging any of severalattachments placed on the machine to thereby control the movement ofvarious elements in the attachment in synchronization with the operationof the copying machine.

Further objects, features and advantages of our invention will becomeapparent upon consideration of the following detailed description inconjunction with the drawing, in which:

FIG. 1 is the same as FIG. 1 in the Van Auken et al. applica-' tion anddepicts the general lay-out of the various elements included in thecopying machine of our invention;

FIG. 2 is a side view of the copying machine of our invention (with theside cover removed) and depicts the chains for driving various elementsin the machine, and the positions of four switches and a start button ontop of the machine;

FIG. 3 depicts schematically the control circuit of the copying machineof FIG. 2 (which machine includes the various internal elements shown inFIG. 1), various points in the circuit being connected to respectivepins in connector 132 on top of the machine;

FIG. 4 depicts various cams and switches contained within two coverplates 70 (shown in FIG. 2);

FIG. 5 depicts the two switches and cams which control multiple copyingof an original and are included in the copying machine;

FIG. 6 depicts another switch and cam included in the copying machine;

FIG. 7 depicts the shape of cam 96 of FIG. 4, together with threedimensions thereof;

FIG. 8 is a plan view showing the top of the machine of FIG. 2 with noattachment placed on it;

FIG. 9 is a top plan view of the fust attachment, the letter bridge,when placed on top of the copying machine;

FIG. 10 is a sectional view of the letter bridge taken through the line10-10 of FIG. 9;

FIG. 1 1 is a bottom plan view of the letter bridge of FIG. 9;

FIG. 12, a sectional view taken through line 12-12 of FIG. 9, depictsthe locking mechanism for securing the letter bridge to the top of thecopying machine;

FIG. 13 illustrates the pin connections in connector 201 of the letterbridge;

FIG. 14 depicts the circuit of FIG. 3 which results when connector 201of the letter bridge is mated with connector 132 on the copying machine(which connector has various pins coupled to numerous points in thecircuit of FIG. 3);

FIG. 15 is a top plan view of the copying machine with the secondattachment, the book copier, secured in place;

FIG. 16 is a side view of the copying machine, shown partially brokenaway, and illustrates the manner in which rails 151 and 152 are attachedto the machine, and the manner in which lever 162 is moved when rail 151is put in place;

FIG. 17 depicts the manner in which mirror 176 is moved within themachine when rail 151 is put in place;

FIG. 18 is a sectional view taken through the line 18-18 of FIG. 15;

FIG. 19 is similar to FIG. 18 but shows movable cam 154 moved to theleft relative to the position shown in FIG. 18;

FIG. 20 is a sectional view taken through the line 20-20 of FIG. 15;

FIG. 21 illustrates the connections made in electrical connector 188 ofthe book copier;

FIG. 22 shows the copying machine control circuit which results whenconnector 188 of the book copier is mated with connector 132 on thecopying machine;

FIG. 23 is a sectional view of the third attachment, the microfilmreader, when placed on the copying machine of our invention, FIG. 23being a sectional view taken through line 23-23 of FIG. 26;

FIG. 24 illustrates the sequence in which a microfilm frame 464 is movedduring a copying cycle;

FIG. 25 is a side view of the microfilm reader attached to the copyingmachine;

FIG. 26 is a top plan view of that part of the microfilm reader attachedto the copying machine;

1. A copying machine system for copying plural types of originaldocuments comprising a copying machine; said copying machine having ascanning window and motion-imparting means disposed at the exteriorthereof, means for moving said motion-imparting means in either a firstdirection or in a second direction opposite to said first direction, anexposure window, means for transporting copy paper past said exposurewindow, optical means for scanning said original document to be copiedas said original document is moved past said scanning window and inresponse thereto for exposing said copy paper at said exposure window,control circuit means for selectively controlling movement of saidmotion-imparting means in said first and second directions and movementof said copy paper transporting means, and copying machine electricalconnector means disposed on the exterior of the copying machine forselectively changing said control circuit means in accordance withconnections made thereto; and at least two copying attachments forplacement on said copying machine, each of said attachmentS includingmeans for engaging said copying machine motion-imparting means and forcontrolling movement of a different one of said plural types of originaldocuments to be copied in either of said first and second directionsdependent upon the direction of movement of said copying machinemotion-imparting means, and attachment electrical connector means oneach of said at least two attachments for mating with said copyingmachine electrical connector means, each of said attachment electricalconnector means functioning to modify said copying machine controlcircuit means to sequence differently in accordance with the type ofsaid original document to be copied.
 2. A copying machine system inaccordance with claim 1 wherein one of said attachments is a letterbridge for controlling the copying of said original document, saidbridge including said means for engaging said copying machinemotion-imparting means and for moving said original document through thebridge in either of said first and second directions dependent upon thedirection of movement of said motion-imparting means, a plurality ofmeans in the bridge for detecting the position of said original documentmoved therethrough relative to said copying machine scanning window, andmeans in the bridge for connecting said plurality of detecting means tosaid attachment electrical connector means, said copying machine controlcircuit means being connectable to said bridge detecting means throughsaid copying machine electrical connector means for sequencing inaccordance with the position of the detected original document as it ismoved through the bridge.
 3. A copying machine system in accordance withclaim 2 wherein said copying machine control circuit means includesmeans for controlling the making of multiple copies of said originaldocument to be copied, said multiple copy controlling means includingmeans for controlling the sequencing of said control circuit means suchthat said copying machine motion-imparting means alternates in directionto move said original document to be copied in said first and seconddirections through said bridge past the scanning window on said copyingmachine, and means controlled by one of said detecting means in saidbridge, connected to said copying machine control circuit means throughsaid copying machine and said attachment electrical connector means, forcausing said copy paper to start moving toward said exposure windowwhile said original document is being moved in said second directionpast said scanning window.
 4. A copying machine system in accordancewith claim 3 further including exposure lamp means in the copyingmachine for illuminating said scanning window, and means for energizingsaid exposure lamp means over a circuit path connected thereto which iscompleted through said copying machine and said attachment electricalconnector means.
 5. A copying machine system in accordance with claim 3wherein each of said copying machine motion-imparting means and saidmeans for engaging said copying machine motion-imparting means is atleast one roller.
 6. A copying machine system in accordance with claim 5including means for moving said copying machine roller faster in saidsecond direction than in said first direction.
 7. A copying machinesystem in accordance with claim 1 wherein each of said copying machinemotion-imparting means and said means for engaging said copying machinemotion-imparting means is at least one roller.
 8. A copying machinesystem in accordance with claim 7 further including exposure lamp meansin the copying machine for illuminating said scanning window, and meansfor energizing said exposure lamp means over a circuit path connectedthereto which is completed through said copying machine and saidattachment electrical connector means.
 9. A copying machine system inaccordance with claim 7 including means for moving said copying machineroller faster in said second direction than in said first direction. 10.A copying machine system in accordance With claim 1 including means formoving said motion-imparting means faster in said second direction thanin said first direction.
 11. A copying machine system in accordance withclaim 1 further including exposure lamp means in the copying machine forilluminating said scanning window, and means for energizing saidexposure lamp means only if a circuit path connected thereto iscompleted through said copying machine and said attachment electricalconnector means.
 12. A copying machine system in accordance with claim 1wherein one of said attachments is a book copier and includes a platenfor engaging said copying machine motion-imparting means when placedthereon, and means attached to said platen for moving therewith and foroperating a plurality of switches to control the sequencing of saidcopying machine control circuit means such that said platen is firstmoved in said first direction and then in said second direction pastsaid copying machine scanning window when a copy is made of saidoriginal document placed on said platen.
 13. A copying machine system inaccordance with claim 12 wherein said copying machine further includes aroll of copy paper, a knife for cutting a sheet of copy paper from saidroll of copy paper, and said platen switch-operating means is adjustablein accordance with the length of said original document to be copied tooperate said switches such that said control circuit means causes saidknife to cut a copy sheet from said copy paper roll whose lengthcorresponds to the length of said original document to be copied.
 14. Acopying machine system in accordance with claim 12 wherein said originaldocument to be copied is placed on said platen such that its forwardedge is in front of the scanning window on top of said copying machineat the start of a copying cycle, means for starting a copying cycle,means responsive to the operation of said starting means for moving acopy sheet toward said exposure window while said copying machinemotion-imparting means is kept stationary, and means included in saidcontrol circuit means for initiating the operation of saidmotion-imparting means to move said platen in said first direction pastsaid scanning window at a time such that said original document and saidcopy paper are in optical synchronization when said copy paper isexposed.
 15. A copying machine system in accordance with claim 14further including means in said copying machine for controlling themaking of multiple copies of said original document to be copied, andmeans responsive to the operation of said multiple copying controllingmeans and the operation of one of said switches by said platenswitch-operating means while said platen is still being returned in saidsecond direction past said scanning window for controlling the start ofsaid copy paper movement for the next copying cycle.
 16. A copyingmachine system in accordance with claim 15 wherein said copying machineoptical means includes a mirror, and mechanical means on said copyingmachine responsive to the placement of the book copier attachmentthereon for moving said mirror within the copying machine.
 17. A copyingmachine system in accordance with claim 16 wherein said book copierattachment includes a pair of rails for placement on said copyingmachine to support said platen as it is moved by said motion-impartingmeans, and one of said rails is operative to bear against saidmechanical means for causing said mirror to move.
 18. A copying machinesystem in accordance with claim 16 wherein said copying machinemotion-imparting means is at least one roller.
 19. A copying machinesystem in accordance with claim 18 including means for moving saidcopying machine roller faster in said second direction than in saidfirst direction.
 20. A copying machine system in accordance with claim12 wherein said copying machine motion-imparting means is at least oneroller.
 21. A copying machine system in accordance with claim 20including means for moving said copying machine Roller faster in saidsecond direction than in said first direction.
 22. A copying machinesystem in accordance with claim 21 wherein said copying machine opticalmeans includes a mirror, and mechanical means on said copying machineresponsive to the placement of the book copier attachment thereon formoving said mirror within the copying machine.
 23. A copying machinesystem in accordance with claim 12 wherein different optical pathlengths exist between said scanning window and said exposure window, andsaid book copier platen and said exposure window, and means responsiveto the placing of said book copier attachment on said copying machinefor correcting the respective optical path length.
 24. A copying machinesystem in accordance with claim 23 wherein said copying machine opticalmeans includes a mirror, and mechanical means on said copying machineresponsive to the placement of the book copier attachment thereon formoving said mirror within the copying machine.
 25. A copying machinesystem in accordance with claim 12 wherein said platen switch-operatingmeans is a cam whose length is adjustable in accordance with the lengthof said original document to be copied.
 26. A copying machine system forcopying plural types of original documents comprising a copying machine;said copying machine having a scanning window and motion-imparting meansdisposed at the exterior thereof, means for moving said motion-impartingmeans, an exposure window, means for transporting copy paper past saidexposure window, optical means for scanning said original document to becopied as said original document is moved past said scanning window andin response thereto for exposing said copy paper at said exposurewindow, control circuit means for selectively controlling movement ofsaid motion-imparting means and movement of said copy paper transportingmeans, and copying machine electrical connector means disposed on theexterior of the copying machine for selectively changing said controlcircuit means in accordance with connections made thereto; and at leasttwo copying attachments for placement on said copying machine, each ofsaid attachments including means for engaging said copying machinemotion-imparting means and for controlling movement of a different oneof said plural types of original documents to be copied, and attachmentelectrical connector means on each of said at least two attachments formating with said copying machine electrical connector means, each ofsaid attachment electrical connector means functioning to modify saidcopying machine control circuit means to sequence differently inaccordance with the type of said original document to be copied.
 27. Acopying machine system in accordance with claim 26 wherein one of saidattachments is a letter bridge for controlling the copying of saidoriginal document, said bridge including said means for engaging saidcopying machine motion-imparting means and for moving said originaldocument through the bridge, a plurality of means in the bridge fordetecting the position of said original document moved therethroughrelative to said copying machine scanning window, and means in thebridge for connecting said plurality of detecting means to saidattachment electrical connector means, said copying machine controlcircuit means being connectable to said bridge detecting means throughsaid copying machine electrical connector means for sequencing inaccordance with the position of the detected original document as it ismoved through the bridge.
 28. A copying machine system in accordancewith claim 26 wherein each of said copying machine motion-impartingmeans and said means for engaging said copying machine motion-impartingmeans is at least one roller.
 29. A copying machine system in accordancewith claim 28 further including exposure lamp means in the copyingmachine for illuminating said scanning window, and means for energizingsaid exposure lamp means over a circuit path connected thereto which iscompleted through Said copying machine and said attachment electricalconnector means.
 30. A copying machine system in accordance with claim28 including means for moving said copying machine roller faster in asecond direction than in a first direction.
 31. A copying machine systemin accordance with claim 26 including means for moving saidmotion-imparting means faster in a second direction than in a firstdirection.
 32. A copying machine system in accordance with claim 26further including exposure lamp means in the copying machine forilluminating said scanning window, and means for energizing saidexposure lamp means only if a circuit path connected thereto iscompleted through said copying machine and said attachment electricalconnector means.
 33. A copying machine system in accordance with claim26 wherein one of said attachments is a book copier and includes aplaten for engaging said copying machine motion-imparting means whenplaced thereon, and means attached to said platen for moving therewithand for operating a plurality of switches to control the sequencing ofsaid copying machine control circuit means.
 34. A copying machine systemin accordance with claim 33 wherein said copying machine furtherincludes a roll of copy paper, a knife for cutting a sheet of copy paperfrom said roll of copy paper, and said platen switch-operating means isadjustable in accordance with the length of said original document to becopied to operate said switches such that said control circuit meanscauses said knife to cut a copy sheet from said copy paper roll whoselength corresponds to the length of said original document to be copied.35. A copying machine system in accordance with claim 33 wherein saidoriginal document to be copied is placed on said platen such that itsforward edge is in front of the scanning window on top of said copyingmachine at the start of a copying cycle, means for starting a copyingcycle, means responsive to the operation of said starting means formoving a copy sheet toward said exposure window while said copyingmachine motion-imparting means is kept stationary, and means included insaid control circuit means for initiating the operation of saidmotion-imparting means to move said platen in a first direction pastsaid scanning window at a time such that said original document and saidcopy paper are in optical sychronization when said copy paper isexposed.
 36. A copying machine system in accordance with claim 35wherein said copying machine optical means includes a mirror, andmechanical means on said copying machine responsive to the placement ofthe book copier attachment thereon for moving said mirror within thecopying machine.
 37. A copying machine system in accordance with claim36 wherein said book copier attachment includes a pair of rails forplacement on said copying machine to support said platen as it is movedby said motion-imparting means, and one of said rails is operative tobear against said mechanical means for causing said mirror to move. 38.A copying machine system in accordance with claim 36 wherein saidcopying machine motion-imparting means is at least one roller.
 39. Acopying machine system in accordance with claim 33 wherein said copyingmachine motion-imparting means is at least one roller.
 40. A copyingmachine system in accordance with claim 33 wherein said copying machineoptical means includes a mirror, and mechanical means on said copyingmachine responsive to the placement of the book copier attachmentthereon for moving said mirror within the copying machine.
 41. A copyingmachine system in accordance with claim 40 wherein said platenswitch-operating means is a cam whose length is adjustable in accordancewith the length of said original document to be copied.
 42. A copyingmachine system in accordance with claim 33 wherein said platenswitch-operating means is a cam whose length is adjustable in accordancewith the length of said original document to be copied.
 43. A copyingmachinE comprising a scanning window and motion-imparting means disposedadjacent thereto, means for moving said motion-imparting means in eithera first direction or in a second direction opposite to said firstdirection, an exposure window, means for transporting copy paper pastsaid exposure window, optical means for scanning an original document tobe copied as said original document is effectively moved past saidscanning window and in response thereto for exposing said copy paper atsaid exposure window, control circuit means for selectively controllingmovement of said motion-imparting means in said first and seconddirections and movement of said copy paper transporting means, a platenfor engaging said motion-imparting means when placed thereon whereindifferent optical lengths exist between said platen and said exposurewindow, and said scanning window and said exposure window, meansresponsive to the placing of said platen on said motion-imparting meansfor correcting the respective optical path length, and means attached tosaid platen for moving therewith and for operating a plurality ofswitches to control the sequencing of said control circuit means suchthat said platen is first moved in said first direction and then in saidsecond direction past said scanning window when a copy is made of saidoriginal document placed on said platen.
 44. A copying machine inaccordance with claim 43 further including a roll of copy paper, a knifefor cutting a sheet of copy paper from said roll of copy paper, andwherein said platen switch-operating means is adjustable in accordancewith the length of said original document to be copied to operate saidswitches such that said control circuit means causes said knife to cut acopy sheet from said copy paper roll whose length corresponds to thelength of said original document to be copied.
 45. A copying machine inaccordance with claim 43 wherein said original document to be copied isplaced on said platen such that its forward edge is in front of saidscanning window at the start of a copying cycle, means for starting acopying cycle, means responsive to the operation of said starting meansfor moving a copy sheet toward said exposure window while said copyingmachine motion-imparting means is kept stationary, and means included insaid control circuit means for initiating the operation of saidmotion-imparting means to move said platen in said first direction pastsaid scanning window at a time such that said original document and saidcopy paper are in optical synchronization when copy paper is exposed.46. A copying machine in accordance with claim 45 further includingmeans for controlling the making of multiple copies of said originaldocument to be copied, and means responsive to the operation of saidmultiple copying controlling means and the operation of one of saidswitches by said platen switch-operating means while said platen isstill being returned in said second direction past said scanning windowfor controlling the start of said copy paper movement for the nextcopying cycle.
 47. A copying machine in accordance with claim 46 whereinsaid optical means includes a mirror, and mechanical means responsive tothe placement of said platen on said motion-imparting means for movingsaid mirror.
 48. A copying machine in accordance with claim 47 furtherincluding a pair of removable rails for supporting said platen as it ismoved by said motion-imparting means, one of said rails being operativeto bear against said mechanical means for causing said mirror to move.49. A copying machine in accordance with claim 47 wherein saidmotion-imparting means is at least one roller.
 50. A copying machine inaccordance with claim 49 including means for moving said roller fasterin said second direction than in said first direction.
 51. A copyingmachine in accordance with claim 43 wherein said motion-imparting meansis at least one roller.
 52. A copying machine in accordance with claim51 including means for moving said rolLer faster in said seconddirection than in said first direction.
 53. A copying machine inaccordance with claim 52 wherein said optical means includes a mirror,and mechanical means responsive to the placement of said platen on saidmotion-imparting means for moving said mirror.
 54. A copying machine inaccordance with claim 43 wherein said optical means includes a mirror,and mechanical means responsive to the placement of said platen on saidmotion-imparting means for moving said mirror.
 55. A copying machine inaccordance with claim 54 wherein said platen switch-operating means is acam whose length is adjustable in accordance with the length of theoriginal to be copied.
 56. A copying machine in accordance with claim 43wherein said platen switch-operating means is a cam whose length isadjustable in accordance with the length of the original to be copied.57. A copying machine comprising a scanning window and motion-impartingmeans disposed at the exterior thereof, a copying attachment adapted tobe placed on said copying machine, said motion-imparting means fortransferring motion to said attachment, means for moving saidmotion-imparting means, an exposure window, means for transporting copypaper past said exposure window, optical means for scanning at least twotypes of original documents to be copied as said original documents areeffectively moved past said scanning window and in response thereto forexposing said copy paper at said exposure window, control circuit meansfor selectively controlling movement of said motion-imparting means andmovement of said copy paper transporting means, and electrical connectormeans disposed on the exterior of the copying machine for selectivelychanging said control circuit means in accordance with connections madethereto by said attachment placed on the copying machine, said controlcircuit means being changeable to sequence in at least two differentmodes for said at least two types of original documents to be copied.58. A copying machine in accordance with claim 57 wherein saidmotion-imparting means is at least one roller.
 59. A copying machine inaccordance with claim 58 further including exposure lamp means forilluminating said scanning window, and means for energizing saidexposure lamp means over a circuit path connected thereto which iscompleted through said electrical connector means and said attachmentplaced on the copying machine.
 60. A copying machine in accordance withclaim 58 wherein said control circuit means includes means forcontrolling said at least one roller to move faster in a seconddirection than in a first direction.
 61. A copying machine in accordancewith claim 57 wherein said control circuit means includes forcontrolling said motion-imparting means to move faster in a seconddirection than in a first direction.
 62. A copying machine in accordancewith claim 57 further including exposure lamp means for illuminatingsaid scanning window, and means for energizing said exposure lamp meansover a circuit path connected thereto which is completed through saidelectrical connector means and said attachment placed on the copyingmachine.
 63. A copying machine in accordance with claims 57 furtherincluding a platen placed on said motion-imparting means and movedtherewith, a plurality of switches on top of the copying machine adaptedto be operated by said platen, said plurality of switches beingconnected to said control circuit means to control the sequencingthereof in accordance with the position of said platen.
 64. A copyingmachine in accordance with claim 63 wherein all of said plurality ofswitches are normally open.
 65. A copying machine in accordance withclaim 63 wherein said optical means includes a mirror, and mechanicalmeans responsive to the placement of said attachment on the copyingmachine for moving said mirror within the copying machine.
 66. A copyingmachine in accordance with claim 65 wherein said motion-imparting meansis at least One roller.
 67. A copying machine in accordance with claim57 wherein said optical means includes a mirror, and mechanical meansresponsive to the placement of said attachment on the copying machinefor moving said mirror within the copying machine.